Ubuntu :: Aligning A Wd20ears Hard Drive After The Fact?
Nov 13, 2010
After getting my components, building my computer, installing ubuntu and beginning to configure things I found out about the issues with aligning Western Digital's wd20ears 2TB hard drive. So I'm wondering what my options are. It's Maverick I've installed and when I go to the 'administration > disk utility' it reports a 1MB partition at the front, then 2TB partition for Ubuntu, then 25GB swap. Can/should I be worrying about this now? Am I too late to do anything except start over (remove old partitions and create new ones beginning in the right sector?) I read in this thread (this thread here) a post that made me hope perhaps I'm worrying about a non-issue but I don't know enough to diagnose things (or fix) myself...
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Jun 10, 2010
would anyone here happen have gotten one of these successfully up, running &, aligned on 5.5? i only want two partitions. one 2gig for swap and the rest mounted @ /. i've googled myself into complete and utter confusion.[Moderator edit: changed the title to something more informative
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Jul 27, 2010
the recent versions of fdisk on Fedora 13 and Ubuntu 10.04 are supposed automatically to solve these things around 4k sector aligment thing if one starts fdisk with -u and -c flags. But I'm getting confused as the heads / sectors informations always differ every time I create a partition.I have WD Green 1.5TB disk. I want 2 partitions. sdb1 with 1.3TB and sdb2 with the remaining space. Here's how it looks like. When I create the first partition (1.3TB one), I get following listin with fdisk:
Code:
# fdisk -lu /dev/sdb
Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes
78 heads, 37 sectors/track, 1015342 cylinders, total 2930277168 sectors
Units = sectors of 1 * 512 = 512 bytes
[code].....
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Jan 25, 2010
I got a dell inspiron 1501 laptop with a 80Gb sata drive what is the best solution to add data storage space for someone that love to have multiples operating systems at hand Note: I use mostly linux so I won't need to change my laptop for many years maybe ...
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Mar 16, 2010
My parents bought a new hard drive for a laptop that I've owned for several years. It's much larger than the current one, so I plan on splitting it up to dual boot it with Ubuntu.I have no problem with partitioning a drive (I always keep a LiveCD handy), but my question is this: how can I go about moving the existing partition to the new drive? This is a laptop, so I can't simply plug the new drive into another slot.
Also, even if I manage to move it, will Windows still work on the new drive in a larger partition? I've had this laptop for quite a while, and I've lost the recovery discs that came with it a long time ago. I also have a lot of software without CDs to reinstall them with. This makes not reinstalling Windows a high priority.
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May 1, 2010
Trying to install Fedora 12 using the 6 CDs. Trying to install on an older x86 box.Problem is that when detecting my hard drive, Fedora 12 recognizes it as a sda hard drive instead of hda hard drive. I have no SCSI connected to my computer what so ever. It's an old fashion PATA Western Digital hard drive.If I proceed with the install, Fedora 12 only installs 200MB of the OS from the first CD only. No options for additional software or anything.
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Mar 21, 2009
Sometimes when I do anything write heavy such as transferring backup or downloading large files from the net, the machine crashes almost completely.
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Jun 3, 2011
I have a laptop with only 30GB storage and I want to install Lubuntu in virtual box but Lubuntu needs 5GB of storage space which i dont have. Could i use an external 160GB hard drive to act as the hard drive for the virtual machine without affecting the files that are already on the external hard drive
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May 4, 2011
I am trying to build my second home file server after building an experimental x386 unit.
Gigabyte x64 Motherboard with 3core processor and 4GB RAM
10 1.5TB SATA HDD (Mostly WD15EARS and W15EADS)
2 2TB SATA2 HDD (WD20EARS)
I want to create a RAID 6 Array of the 10 1.5TB drives and (1.5 TB partitons of the 2 TB drives) the remaining 0.5TB of the 2 TB drives will be used for RAID 1 arrays (SWAP, root and usr)
When i partition the drives the 1.5 TB drives can be Primary or Logical. The 2 TB drives do not give me this option.
For the 2 TB drives:
- i can partition into 8GB Swap, 20 GB root, 474GB usr and 1.5TB RAID6.
- When i select (Physical partition for RAID) I CANNOT change the Bootable FLag to ON. It always stay OFF. If i use other file systems such as exf4 it can be changed to ON.
- when i continue with the installation it fails while installing GRUB.
Questions:
Why does my 2TB drive not allow me the choice of Primary or Logical?
Is the Bootable Flag = Off the reason GRUB will not install?
How can I achieve my goal of using the 2TB drives for RAID 1 and RAID 6
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Jan 14, 2009
I have 2 ubuntu's: 1 on my ineternal hard drive, 1 on my external
When I startup without my ext drive =>GRUB error 21.
And when I plug it in I can choose: the standard ubuntu kernel is the one on my external, and the original one is listed under other...
I'd like to be able to startup without external hard drive and make the ubuntu on my internal drve the standard.
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Jul 14, 2011
When I was installing Ubuntu onto my laptop, I probably did a mistake partitioning the hard drive by selecting align to: nothing, because I didn't want to have unallocated spaces between partitions. However, this resulted in partitions' misalignment as no one partition in the extended one (including the one that is extended) doesn't start on a physical sector boundary. As I already have much data on the HDD and I don't have another one that big, it is impossible for me to erase existing partitions and then copy the data back. So, is there please a way to get the partitions aligned properly without deleting them?
Here is output from fdisk -lu:
Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xd58c6e9d
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Aug 3, 2010
I have an Acer tiny desktop using laptop components and I want to replace its small laptop hdd running Vista with a Kingston SSDNow V Series Boot Drive 30GB and install Ubuntu, since it will support TRIM. I am aware of the current issues on some new hard drives with 512 vs. 4k sector sizes and the necessity to align sectors for those drives. And I know I've seen some posts or discussion of aligning sectors for SSD's.
I'll be doing more searching for info on this, but my previous searches on the 4K sector alignment issue for the new WD hdd's on linux were confusing. Does anyone have definitive information on the necessity of aligning 4k sectors on current Linux kernels, or on whether aligning sectors is necessary for SSD's?
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Dec 30, 2010
I installed Vector linux on my multi-boot system and didn't install grub because I didn't see a way to not mess with the MBR. I already have grub legacy installed to MBR and just wanted to add to the menu.lst. Now, can I install grub to the root partition where I installed Vector or should I just re-install and let it write to mbr and redo mbr later?
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Nov 14, 2010
I installed Slackware quite awhile ago now, and am starting to wish that I'd done a full install instead of cherry-picking my packages. Is there any way I can do it retroactively... you know, just add all the stuff I didn't install? I'm running -current.
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Jan 17, 2011
I recently bought 320 GB Trancend external hard disk and working fine days back.Earlier i could copy from and to the hard disk with out any issue. I dont know what happened after that now i am not able to write any files in to the external hard disk. This is not NTFS formatted device. here is some of the out put from terminal.
Code:
sundar@sundar-sundar:~$ fdisk -l
Disk /dev/sda: 120.0 GB, 120034123776 bytes
[code]...
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Sep 4, 2010
So here's the deal: I'm "supporting" this older lady who's using an i386-type Compaq (Pentium III -- Coppermine) with 384MB of RAM. She says that the machine is being slow, and I decide that she needs a leaner OS than what she has (which is Ubuntu 09.10). OK, so I do some research and conclude that openSUSE is the best OS for both the machine and for the older lady. I use Bittorrent to download 11.3 and check the md5 checksum. In my own room I install on a machine that is identical to hers 11.3 and everything checks out (I ultimately conclude that GNOME is large for the machine and spend a number of days trying to swap it out with XFCE, but that's another story.). So I figure that everything's great and I use the same (GNOME) live disk to install 11.3 on her machine. As soon as GNOME fully boots up it crashes. I reinstall and it crashes again. I swap out hard drives (remember, these are identical machines that I'm "supporting", here) and as soon as GNOME is fully loaded 11.3 then promptly crashes. Finally, I swap out her entire MACHINE with the identical one that I've been working on in my room. The f---er crashes when GNOME is fully loaded! By now, I'm fully pissed (because by this time my regular machine has ALSO gone down (possibly because of openSUSE, but I cannot say definitively so at this time).
[Code]...
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Jun 22, 2010
Last night a RHEL server in our cluster unexpectedly ran out of memory and became unable to perform its purpose. I say unexpectedly, because it had been purring away for ~385 days of uptime without a twitch. It has 16GB of memory, of which on average 2GB are in use. I see no unusual traffic in e.g. HTTPD log files. how to approach tracking down why this might have happened, with a view to preventing a reoccurrence.
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Mar 21, 2009
I have written a CGI script which prints 2 tags at either end of the screen (actually they are the "Previous page" and "Next page" links for either end of the screen). The left one is under a <DIV ALIGN="LEFT"></DIV> and the right one <DIV ALIGN="RIGHT"></DIV>. Unfortunately they don't line up on screen - the left "Previous page" text is one line higher than the "Next page" link - I tried putting in a <NOBR> tag between them but it didn't work - can someone tell me what to do?
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Sep 11, 2010
I have been trying to install centos on my hp servers and when i get to partitions my hard drives the OS does not detect any harddrives. I have 4 scsi drives and i believe a intergrated smart array controller.
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May 22, 2011
is there a way to write/unpack .qcow2 hard disk image directly to real hard drive in Linux?(I know it's possible to unpack .qcow2 to .raw and then dd to drive, but I'd like to skip .raw since its large)
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Aug 23, 2010
I have a SATA drive that worked fine. Then I installed two more hard drives into my system. When these hard drives are installed, if I try to access the SATA drive in Linux, it will start lightly clicking and then the drive will become unavailable. If I power on the machine without the other two hard drives then it works fine. What could be causing this to happen? I don't think it's heat because the two hard drives are far away from the SATA drive.
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Aug 1, 2010
you have to read from many devices separate devices and make it look like a single one. It sounds very much like a device driver to me, perhaps... but getting my hands dirty with kernel code sounds like a daunting task for me that I've never done it...
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Feb 12, 2011
i have ubuntu 10.10 installed on a 40gb hard drive and have setup arch linux on a seperate 160gb drive and am at the Choose bootloader screen of Arch Linux. My question is do i use arch linux to reinstall GRUB or do I choose none and configure GRUB to see both? if its the later can you tell how. Oh and Ubuntu is on sda and Arch is on sdb
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Jan 23, 2010
I wanted to know if i can install 9.10 onto a usb flash drive--without using my computers hard drive at all when running ubuntu off the flash drive-
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Aug 26, 2010
I just booted one of my computers from a usb drive I had installed Ubuntu 10.04 LTS to, and when I booted it up on that computer, it worked fine. Then, when I powered down the computer and booted it back up to the main hard drive, it booted to the same that my flash drive was running, but my flash drive was not plugged in!! How is this possible? Did it copy itself over my other operating system? There is no trace of it. By the way, that, too, was ubuntu 10.04.
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Jun 19, 2011
I would like to install Linux Ubuntu 11.04 on an external hard drive - its partitioned and ready for Linux.I've downloaded and burnt the .iso file to a DVD so its all good so far...First of all... is this possible without messing up my macbook? I don't particularly want to break into my macbook to disconnect the hard drive (I read on a tutorial for a previous version of Ubuntu that I'd have to do that... - does it still apply to 11.04?) - as it voids the warranty (I checked ).The reason I ask this is because I had a friend who partitioned their internal hard drive and installed Ubuntu on it. But after installation was complete they couldn't boot up Windows 7 or Ubuntu... and it resulted in them having to clean install Windows 7... - I don't want to end up in that situation
Second... If it is possible to install it without messing up my macbook... - Do I just follow the install instructions but just make sure that where possible I make sure that everything is installed on my external hard drive?...I really need someone to put my mind at rest that everything will run smoothly and that I'll be able to run Mac OS X as usual but also that I'll be able to boot from my external hard drive to run Ubuntu.
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Mar 23, 2010
I am trying to move a whole bunch of files from one partition on one hard drive to the same partition on another hard drive. Can I mount the same partition (same name, different drives, i.e. /data on /dev/hda1 and /data on /dev/hdb1)and copy those files? Shutdown the server, take out /dev/hda1 and boot up with the new drive and it's /data contents.
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Jan 20, 2010
I have ubuntu server acting as a router installed on a 60 gig drive, i'd like to use that drive in another machine and replace it with a 5 gig drive. how can i transfer from the 60 gig drive to the 5 gig drive?
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Jun 23, 2010
I am soon going to have to return my intel ssd for replacement. Therefore, I am going to be cloning the 160gb drive to a 320gb drive to keep my system settings while I am waiting for my new drive. I will not change the size of the partitions to fill the 320gb drive. I'll just change the grub settings if I absolutely have to. After that, I am going to have to clone the 320gb drive back to the replacement 160gb drive. Am I going to have problems doing that since I will be going from a larger to a smaller drive?I typically use Clonezilla with the default settings.
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Oct 7, 2010
I want to load ubuntu on my home pc. I have two hard drives but not have enough dvd's to back everything up on #2 hard drive. If I load ubuntu on drive 1 can I get in two drive two?
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